Also tried with AS6C1008 SRAM without success. I noticed that it differs from AS6C4008 pinout (#1: NC instead of A18 and #30: CE2 instead of A17). Any ideas?
Best regards
I was thinking of exactly that! Will post on designer's github.
Pitty that so many RTL8019s are *nearly* capable... :(
AFAIK, indeed LIM EMS 4.0 allows for 1 to 4 16K pages in the page frame - unfortunately I guess that someone must write an EMS driver supporting this configuration and then...
I have this RTL8019AS-based 8-bit NIC (rev 2.2): https://github.com/hkzlab/ISA_8bitNetwork_8019.
Configuration: I/O 300h, IRQ 7, 64K BOOT ROM @ D000h (via jumpers). Works fine as a NIC.
Using an AS6C4008-55PCN (4Mbit, 512Kx8) SRAM chip (tested, works).
RTL2UMB reports success @0300h but...
I have successfully built this card:
https://github.com/sbelectronics/emsflashboard
http://www.smbaker.com/8-bit-isa-ems-board-flash-disk-board
https://youtu.be/rj1CxmtXPWM
I have also successfully compiled the EMS driver (SBEMM) following the author's instructions.
Bill of materials...
Hello.
I came by the following ancient PC XT system: Multitech 700 Plus - MPF-PC/700 PB85017(I)-4A.
I would like to revive/upgrade it, but I have no idea how to configure the system using the DIP switches (SW1 & SW2). Naturally, no manual is available.
Does anybody know how to use the DIP...